Carbureter.



C. DE LUKACSEVICS & C. J. TERRILL CARBURETER.

,APPLICATION FILED JULY7, 1915.

1 ,1 90, 1 24. Patented July 4, 1916.

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C. DE LUKACSEVICS & C. J. TERRILL.

CARBURETER.

APPLICATION FILED lULY7. 1915.

1 1 90, 1 24:. I r Patented J u1y4, 1916.

2 SHEETS-SHEET 2.

x A v2 U N I z i I [I] [1 2 wzfarne Q UNITED STATES PATENT OFFICE.

CHARLES DE LUKACSEVIC$ AND CLAIR J. TERRILL, OF WEST NUTLEY, NEW JERSEY;

SAID TERRILL ASSIGNOR TO SAID DE LUKACSEVICS.

CABBURETER.

- Specification of Letters Patent.

Patented July 4, 1916.

To all whom it may concern:

Be it known that we, CHARLES DE LUKA- csnvros and CLAIR J. TERRILL, citizens of the United States, residing at Vest Nutley, in the county OfESSGX and State of New Jersey, have invented new and useful Improvements in Carburetors, of which the following is a specification.

This invention relates to improvements in carbureters, proposing a construction of the broad or general type disclosed in our c0- pending application Serial No. 29,150, and which embodies certain features of improvement over the construction shown in our said application.

The type of carbureter referred to embodies an absorbent element which is interposed between the fuel chamber and the fuel passage which is connected to the suction pipe of the engine, wherebythe fuel chamber is subject to the suction set up insaid passage and the fuel from said chamber is delivered into the said passage in a gaseous or vaporized form. The present invention is concerned more particularly with improvements in the construction and arrange-' ment of the said absorbent element, in features of organization of the carburet-er as a whole, in the construction and relation of the fuel and air valves, and in the relation of these valves to the absorbent element.

The objects of the invention, briefly stated, are to provide a carbureter of the type iden: tified which shall have greater facility of assemblage, in which the renewable absorbent element shall be more durable and more readily fitted 'in position and'shall require less attention for the purposes of cleaning, and which may be manufactured with greater facility, at less cost, and with a more advantageous arrangement of parts.

Embodiments of the invention are illustrated in the accompanying drawings, in which Figure 1 is a vertical longitudinal sectional view of a carbureter embodying the features of improvement aforesaid; Fig. 2

is a top plan view thereof; Fig. 3 is a de-- tail sectional view of the absorbent element of the carbureter shown in Fig. 1; Fig. 4C is a detail vertical sectional view, partly in elevation, of a modified form of absorbent element; Fig. 5 is a detail horizontal sec= tional view, partly in bottom plan, of the absorbent element shown in Fig. 4; Fig. 6

is a plan view, applicable to either of the absorbent elements shown in Figs. 3 and 1; Fig. 7 is a detail elevation of the fuel and air valve of the carbureter shown in Fig. 1; Fig. 8 is a vertical longitudinal section showing a modified construction of carbureter embodying the features of improvement aforesaid; Fig. 9 is atop plan view thereof; Fig. 10 is a detail vertical sectional view of the absorbent element embodied in the carbureter shown in Fig. 8; and Fig. 11 is a detail top plan view of the absorbent element shown in Fig. 10.

Similar characters of reference designate corresponding parts throughout the several views.

The casing of the carbureter is made, in the embodiment disclosed, of two parts, an upper part A and a lower part B. These two parts are connected together in any suitable manner, preferably by bolt fastenings C; and the part A is provided with a flange D by which the carburetor may be attached to the motor suction tube. r

The parts A and B are formed to provide the fuel reservoir or chamber E and the centrally arranged air and gas passage F. The part A has a centrally arranged, outwardly flaring opening G which forms an axial continuation of the passage F and in which the mixture or co-mingling of the gas and air takes place or is initiated. The air and gas passage F aforesaid is defined conjointly by an open-ended cylinder or barrel 1 formed with the part B, by a fuel absorbing element 2 and by the flaring opening G aforesaid. In the embodiment shown in Fig. 1, the cylinder or barrel 1 also forms the inner wall of the fuel reservoir or chamber E. The cylinder or barrel 1 terminates at some distance below the lower edge of the opening G and the absorbent element 2 has at its upper end a thickened portion 2*, providing an overhanging shoulder 2 which said thickened portion occupies the space between the upper edge of the cylinder or barrel 1 and the lower edge of the opening G and has its inner circumferential face flush with the inner face of the cylinder or barrel 1 so as to form a portion of the annular wall of the passage F. The absorbent element 2 is supported by the engagement of its shoulder 2 upon the upper edge of the cylinder or barrel 1 and is confined or held in position by and between said cylin- LTD der or barrel 1 and the part A of the carbureter casing, the said part A having an internal flat, annular facet 3 coextensive and in contact with the upper face of the absorbent element 2. The absorbent element 2 has its portion below the thickened portion :2 of nearly or approximately the same depth as the cylinder or l'r-arrel 1, and said absorbent element, therefore, projects nearly to the bottom of the fuel reservoir or chamber E and is, for the greater part of its ver tical extent, immersed in the liquid fuel in said chamber or reservoir, the portion of the absorbent element 2 below the thickened portion 2 thereof being in close fitting, concentrically surrounding relation to the cylinder or barrel 1.

The part B of the carburetor casing is provided below the passage F, and in axial alinement therewith, with an air chamber H arranged within a surrounding air distribution chamber 1 having at a suitably lo cated point an air inlet J. Communication is established between the chambers H and I by a series of relatively large openings l formed in the common wall h of the cham bers H and l. The openings at are adjustable as to their size, preferably by means of an adjusting ring 5 surrounding and closely fitting against the wall H and provided with a projecting lever portion 6. The ring 5 has openings '7 to correspond in number and form to the openings which, according to the position of said ring, may be moved into complete or partial. register with the openings a, or entirely out of register with said openings. l he ring 5 has a circumscribing flange 8 at its lower edge which forms the base or a part of the base of the chamber 1.

As in the construction shown in our pend application above referred to, the carbureter includes an arrangement of valves for controlling the quantum of the fuel mixture, which said valves, the one for fuel and the other for air. are so connected that the requisite proportions of air and gas will be maintained in any quantum of fuel mixture for which said valves may be adjusted.

The supply of fuel is controlled by a cylindrical valve 9 and the supply of air by a cylindrical valve 10. The valve 9 fits closely against the inner face of the passage F and the valve 10 fits closely against the inner face of the wall it. The valve 9 is of such depth that it may completely cover the normally exposed inner face of the portion 2 of the absorbent element 2 and the valve 10 is of such depth that it may completely cover the openings 4. Fig. 1 shows the valves 9 and 10 in positions to completely cover the absorbent element portion 2 and the openings 4. The valves 9 and 10 are connected to move as one, preferably by spaced upright ribs 11, carried by the radial arms of a spider frame which includes as a part thereof the valve 10 and which has at its center a collar 12 by which the valve unit, comprising the valves 9 and 10, is con-- nected to the valve operating rod 18. The rod 13, which is arranged co axially of the passage F and the valve chamber H is slidable in the direction of its axis through a guiding collar 1 1i formed in the bottom plate of the chamber H and is operated in any suitable manner, conveniently, however, by connection to a arm 15 on a reel; shaft 16 journaled in a bracket 17 formed with the bottom plate of the chamber H and having a second arm 18 for connection to the lever or link, (not shown), of the valve adjusting device.

The fuel chamber or reserv ir E may, if desired and as shown, be equipped with a suitable float feed mechanism, designated generally as K, which, as usual, controls the admission of fuel into said chamber from a suitably constructed and arranged fuel inlet L, in this instance formed with the part B of the carburetor casing. is shown in Fig. 1, the valve 9 has a vertical opening or split 9 through which a very small portion of the surface of the part 2 of the absorbent element 2 will be exposed, when said valve 9 is in position to otl'icrvv'ise cover said absorbentelement, for the purpose of enabling, under such COTUllJlOI]. sufficient fuel to be supplied to the engine to maintain the operation of the engine at a very low speed, or, as it is sometimes termed throttle speed. In this way, no adjustment of the throttle is required. The provision of the opening or split 9?, while ad-.

vantageous, is not obligatory.

Where the absorbent element is directly exposed to the action of the air drawn through the passage F and is in direct contactwith the valve 9. provision should be made against too free an absorption and transmission of liquid fuel. by said element '11 and against undue wear thereof. These considerations can be practically satisfied in a number of different ways. three of which are herein disclosed. According to Figs. 1 and 3, the absorbent element is constructed of absorbent porcel am or a hardened clay prod not, either of which is substantially less absorbent than ordinary felt, and both of which possess the requisite wear resisting qualities.

'lhe absorbent element shown in Figs. 4 and 5 is. as regards external form, of the same construction as the absorbent element shown in Figs. 1 and 3, and the same reference characters are used for its designation. The absorbent element shown in Figs. l. and 5 is, however, composed of compressed felt molded to shape and impregnated, as

required. with suitable non-absorbent ma- Y tcrlal, such as bakehte or shellac, the of fice of which is to reduce the absorbency of the felt and to impart to the felt absorbent element the requisite stiffness or rigidity. The felt absorbent element shown in Figs. 6 and 7 has its thickened port-ion 2 reinforced by a suitable metal skeleton comprising spaced vertical bars 19 arranged in annular series and carried by and depending from a flat wear rin which rests upon the upper face of the absorbent element and abuts and contacts with the facet 3 of the part A of the carbureter casing. The bars 19 are preferably of hour-glass shape in crosssection as shown, or are otherwise formed, in order that they may interlock with the felt. In this construction, only part of the surface of the thickened portion 2 of the absorbent element is exposed to the action of the air induced through the passage F and the bars 19, coming flush with the inner face of the part 2 of the absorbent element. take up the wear incident to the action of the valve 9. The said bars also permanently maintain the requisite form of the exposed part of the absorbent element and prevent the felt from being squeezed or deformed when inserted-between the two parts of the carbureter casing. The air inlet 5 is preferably connected to a source of hot air supply, not shown, and may be provided, with one or more openings 21 for the admission of cold air, said openings being. controlled, as to their eflicient size, by asur rounding regulating ring 22.

In the construction shown in Fig. 1, the parts of the carbureter casing are, as usual, composed altogether of metal. The construction shown in Fig. 8 is generally the same, as regards the relation of the salient parts, as the construction shown in Fig. 1, but differs principally in that the body of the carbureter casing is composed of the well 7 called bakelite or condensite. In this case, the bakelite body portion of the carbureter is formed to provide the fuel chamber or reservoir E, and the air passage F, the tubular condensite element defining the said air passage having an annular recess in its upper end in which is set an eX ternally-threaded ring 23 to which are secured the metal attachment flange D and the metal cover 2% for the fuel chamber or reservoir E. The modified construction in cludes the air chamber H arranged below and in alinement with the air passage F. The casing which provides the air chamber is formed of metal and is suitably attached to the condensite base of the fuel reservoir E. The said condensite base also carries the metal fuel inlet L for the fuel reservoir chamber E.

Whereas in the construction shown in Fig. 1 the absorbent element is removably fitted known insulating product usually which form the carbureter casing, in the construction shown in Fig. 8 the absorbent element, here designated as 2, is perma nently incorporated in the bakelite inner wall of the carbureter casing. The absorbent element 2, composed of felt having "bakelite or shellac incorporated therein, as in the construction shown in Fig. 6, is first molded to shape, and so molded, has the form shown in Figs. 10 and 11 and includes the thickened portion, here designated 2, corresponding to the thickened portion 2 of the absorbent element 2. The thickened portion 2 is interrupted by an annular series of radial recesses and the body portion of the element 2 is preferably of bell. or downwardly flaring form and is provided with suitably arranged openings 26. The cylindrical part or element which provides or defines the air passage F is composed of two companion bakelite parts 7' and f, respectively, which have complementary or mating recesses that conjointly conform to the outline of the absorbent element 2. One of the said parts, 7 or f, as the case may be, has studs or pins f and one of the said parts f or f, has ribs F. In completing the carbureter casing, the molded absorbent element 2 is fitted between the parts and 7 in the complementary recesses provided therefor in said parts, the pins f engaging through the openings 26 and the ribs f engaging in the recesses 25. There upon, by application of heat and pressure, the parts f and f are molded together so that they become integrally or homogeneously connected by the pins f and ribs P, which said pins and ribs permanently maintain the absorbent element as a part of or incorporated in the wall of the passage F. The lower portion of the absorbent element proiects below the recesses in which the element 's fitted and dips into the fuel chamber or reservoir E. The upper portion of the ab sol-bent element, 2'. 0., the thickened portion 2 thereof. is exposed at intervals determined by the arrangement of the ribs f to the air induced'through the passage F. In this case, the ribs f take up the wear of the fuel valve, here designated as 9 in the same way that this function is served by the vertical bars 19 in the construction shown in Fig. 6.

The fuel valve 9 is connected to move as one with the air valve. here designated 10, the said valves being similar in relation and operation to the valves 9 and 10 of Fig. 1 and being operated in a similar manner. In the modified construction, the special air inlet J is omitted and the air enters into the chamber I-I directly through the air admission openings, here designated 4t and controlled, as in the case of Fig. 1, by an apertured regulating ring here designated 5'.

between the two separate parts A and B As stated in the description of Fig. 1, the

split or opening 9, while advantageous, is not obligatory; and in Fig. 8, the valve 9 is shown as devoid of such a split. or opening. The differences between the constructions shown in Figs. 1 and 8 are concerned with structural details, the principles of operation being the same in both cases and, as in our abovc-in ntioned pending application Ser'il No. 29,150, involving the delivery of the fuel in a gaseous or vaporized state into the air passage E by the absorbent QlULJCI'll consequent to the prevailing engine suction. It will be understood that no specific description herein contained is intended to put any limitation on the scope of the appended claims which does not adhere in the language thereof.

ll e claim 1. A carburetor having a fuel chamber or reservoir and an air passage separated therefrom and having an air inlet and an outlet for connection to the motor suction tube, said chamber and said air passage being separated by an annular wall compris ing a rigid body part and arelatively stiff absorbent element, the said body part having an opening communicating with the upper portion of said air passage and also communicating with the said fuel chamber, the said absorbent clement occupying said opening and having an upper thickened portion which is freely exposed in said fuel chamber and which provides a shoulder for engagement upon the rigid body part of said wall, the said. absorbent element having its lower portion freely exposed in said fuel chamber, and a cylindrical slide valve movable in said air passage across the freely exposed surfacc therein of said absorbent element.

9. A carburetor having a fuel chamber or reservoir and. an air passage separated therefrom and having an air inlet and an outlet for connection to the motor suction tube, said chamber and said air passage being separated by an annular wall comprising a rigid body part and a relatively stiff absorbent element, the said body part having an opening communicating with the up per portion. of said air passage and also communicating with the said fuel chamber, the said absorbent element occupying said opening and having its lower portion freely exposed in said fuel chamber and its upper portion freely exposed in said air passage, a. cylindrical slide valve movable in said air passage across the freely exposed surface therein of said absorbent element, and a valve controlling the supply of air to said air inlet, the said valves being connected to move as one and the said slide valve having a split or opening therein which always uncovers a portion of the absorbentelement surface exposed i said fuel chamber.

A carburetor having a fuel chamber or reservoir and an air passage separated therefrom and having an outlet for connection to the motor suction tube, an air chamber arranged below said air passage and in open communication therewith, said chamber having air inlet ogcnings in its annular wall, said fuel ciiamber and said air passage being separated by an annular wall comprising a rigid body part and a relatively stiff absorbent element, the said body part having an opening communicating with the upper portion of said air passage and also communicating with the said fuel chamber, the said absorbent element occupying said opening and having its lower portion freely exposed. in said fuel chamber and its upper portion freely exposed in said air passage, a cylindrical slide valve movable in said air passage across thefreely exposed surface therein of said. absorbent element, and a second cylindrical slide valve movable in said air chamber across the air inlet openings thereof, said valves being connected to move as one.

4-. A carburetor having a fuel chamber and an air passage separated therefrom and having an air inlet and an outlet for connection to the motor suction tube, the wall between the fuel chamber and the air passage comprising an annular metal part hav ing a continuous interruption at its upper end and an annular relatively stiff absorbent element having its lower portion concentric to the said metal partand freely exposed in the fuel chamber, and having its upper portion thickened and closely fitted in the interruption of the metal part for support thereon and for free exposure in the air passage, that face of the absorbent element which is exposed in the air passage being flusn with the inner face of the an nular metal part, and a cylindrical slide valve movable in said air passage across the freely exposed surface therein of said ab-- sorbent element.

in testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

CHARLES on LUKACSEVICS. CLAIR J. TERRILL. lVitnesses M. W. Moonn, Mourns MIonnLsoN.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Eatents. Washington, D. G. 

